import React from "react";
import { View, Text, Button } from "react-native";
class HomeScreen extends React.Component { 
  render() { 
    return (
      <View style={{ flex: 1, alignItems: "center", justifyContent: "center" }}>
        <Text>首页</Text>
      </View>
    ); 
  } 
}
export default HomeScreen
